Stone washing and grading machinery.



F. J. aonmsow.

STONE WASHING AND GRADING MACHINERY.

APPLICATION FILED SEPT. 13, 1915.

1,178,126. Patented Apr.4,1916.

2 SHEETS-SHEET I.

IN VEN TOR.

WITNESSES THE COLUMBXA PLANOGRAPH COV; WASHINGTON. n. c.

1F. J. BODINSON.

STONE WASHING AND GRADING MACHINERY.

APPLICATION FILED SEPT. 13, 1915.

1 1 78, 1 26 Patented Apr. 4, 1916.

2 SHEETS-SHEET 2- WITNESSES; v A INI EflivToR.

THE COLUMBIA PLANOGRAFH c0.. WASHINGTON. D. c.

FREDERICK J. BODINSON, OF ALAMEDA, CALIFORNIA.

STONE WASHING AND GRADING MACHINERY.

Specification of Letters Patent.

Patented Apr. 4, 1916.

Application filed September 13, 1915. Serial No. 50,407.

To (ZZZ whom it may concern Be it known that I, FREDERICK J. Boom- SON, a citizen of the United States, residing at Alameda, in the county of Alameda and State of California, have invented'a new and useful Improvement in Stone Washing and Grading Machinery, of which the following is a specification and which is illus trated in the accompany ng drawings.

My invention relates to improvements in machinery for the washing and screening.

of crushed rock, gravel, sand, etc, and has for its principal object an arrangement of washing drums and revolving screens where by such installations are shortened up, and consists of a Washing drum inside of a revolving screen so that both are'supported by the same shaft and revolve together instead of having them mounted on separate supports or placed end to'end as has heretofore been the practice and I thereby secure greater compactness and simplicity of construction and the saving of space, bearings and shafting. I attain this and other objects by the mechanism illustrated in the accompanying drawings in which Figure 1 is a longitudinal section of a washing drum contained within a conical revolving'screen associated with a supporting shaft and-loading spout. Fig. 2 is an end view of the conical screen containing the washing drum. Figs; 3 and 4 are longitudinal sections of conical revolving screens containing washing drums of different forms from the one shown in Fig.1.

Similar numerals in the different views refer to similar parts,and the screen shell 1 is what is known as a conical screen. It is secured to a cast head 2 and supported on a shaft 3 resting in bearings 4- 1. Within 1 the screen shell is placed a washing drum 5-said drum being supported a distance away from the cast head 2 on the projections 6 cast thereon against which it is drawn by the hookbolts 7. V

The washing drum 5 in Fig. 1 is cone shaped with the large end projecting out- Copies of this patent may be obtained for five cents each, by addressing the spiral fin 13.

wardly to receive the material 14, to be washed from the chute 8. Water is also admitted to the washing drum from the pipe 9 and is kept to a certain depth 10 in the washing drum by reason of the high flange 11 on the end of drum and the height of the Blades 12 attached to the inner surface of the drum, triturate the gravel and water when the apparatus is revolved and loosen up the mud, and the spiral fin 13 forces both water and material along the bottom of the drum and into the screen shell 1 where it is screened and passed to other screens in the plant for further screening if desired.

The spiral fin 13 serves the double purpose of keeping the water at a certain depth in the drum and also of forcing the water and gravel all out into the screen.

7 The difference in the shape of the washing drum 5 in Fig. 3 and 5 Fig. 4 simply affects the depth of the water retainedin the and in the conical form shown in the greatest amount of water 1s kept drum, Fig. l

'at the point of receiving the material.

In a device of the character described, a rotary shaft, bearings therefor, a head secured on an end of the shaft, a conical screen secured at one end to said head and wholly supported thereby, its lower side sloping downward from the head at a sufficient angle to permit the material being graded to roll down said lower side, a washing drum supported wholly by said head within the screen and co-axially therewith, a flange extending inwardly from the drum at theend remote from the head, means for supplying water and material to be washed and graded to the interior of said drum at said latter end, a spiral fin in said drum for feeding the material to said other end, and agitating blades in said drum.

FREDERICK J. BODINSON.

Witnesses:

GEO. E. TAYLOR, H. T. HESSELMEYER.

Commissioner of Patents,

Washington, D. C. 

